話柄 is read as わへい (wahei) and means topic.
わへい
wahei
てがらばなし
boastful story
はなしをもる
to exaggerate
わだいそうぜん
being much talked about
ひとがら
personality
みがら
one's person
ことがら
matter
がら
pattern
てがら
achievement
いえがら
good family
おうへい
arrogant
あいだがら
relationship
こがら
small pattern